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The Scalability-Efficiency/Maintainability-Portability Trade-Off in Simulation software Engineering: Examples and a Preliminary Systematic Literature Review

The Scalability-Efficiency/Maintainability-Portability Trade...

引用

International Workshop on software Engineering for High Performance Computing in Computational Science & Engineering (SE-HPCCSE)

作者： Dirk Pflüger Miriam Mehl Julian Valentin Florian Lindner David Pfander Stefan Wagner Daniel Graziotin Yang Wang Institute for Parallel and Distributed Systems University of Stuttgart Germany Institute of Software Technology University of Stuttgart Germany

ISBN: (纸本)9781509052257

Large-scale simulations play a central role in science and the industry. Several challenges occur when building simulation software, because simulations require complex software developed in a dynamic construction process. That is why simulation software engineering (SSE) is emerging lately as a research focus. The dichotomous trade-off between scalability and efficiency (SE) on the one hand and maintainability and portability (MP) on the other hand is one of the core challenges. We report on the SE/MP trade-off in the context of an ongoing systematic literature review (SLR). After characterizing the issue of the SE/MP trade-off using two examples from our own research, we (1) review the 33 identified articles that assess the trade-off, (2) summarize the proposed solutions for the tradeoff, and (3) discuss the findings for SSE and future work. Overall, we see evidence for the SE/MP trade-off and first solution approaches. However, a strong empirical foundation has yet to be established; general quantitative metrics and methods supporting software developers in addressing the trade-off have to be developed. We foresee considerable future work in SSE across scientific communities.

关键词： software Computational modeling Mathematical model Scalability Hardware software engineering Numerical models

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A software architecture for multidisciplinary applications: Integrating task and data parallelism 3rd

引用

3rd Joint International Conference on Vector and parallel Processing, CONPAR 1994 - VAPP VI

作者： Chapman, Barbara Mehrotra, Piyush Van Rosendale, John Zima, Hans Institute for Software Technology and Parallel Systems University of Vienna Brunner Strasse 72 ViennaA-1210 Austria ICASE MS 132C NASA Langley Research Center HamptonVA23681 United States

ISBN: (纸本)9783540584308

Data parallel languages such as Vienna Fortran and EPF can be successfully applied to a wide range of numerical applications. However, many advanced scientific and engineering applications are of a multidisciplinary and heterogeneous nature and thus do not fit well into the data parallel paradigm. In this paper we present new Fortran 90 language extensions to fill this gap. Tasks can be spawned as asynchronous activities in a homogeneous or heterogeneous computing environment;they interact by sharing access to Shared Data Abstractions (SDAs). These mechanisms support the integration of data and task parallelism as well as nested task parallelism and thus can be used to express multidisciplinary applications in a natural and efficient way. © Springer-Verlag Berlin Heidelberg 1994.

关键词： Application programs

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High performance Fortran languages: Advanced applications and their implementation

High performance Fortran languages: Advanced applications an...

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International Conference and Exhibition on High-Performance Computing and Networking, HPCN 1994

作者： Chapman, Barbara Mehrotra, Piyush Zima, Hans Institute for Software Technology and Parallel Systems University of Vienna Brünner Strasse 72 ViennaA-1210 Austria ICASE NASA Langley Research Center MS 132C HamptonVA23681 United States

ISBN: (纸本)9783540579816

High Performance Fortran Languages such as Vienna Fortran and High Performance Fortran (HPF) allow the programming of massively parallel machines at a relatively high level of abstraction, based on a user-specified distribution of data across the processors of the machine. In this paper we examine the parallelization of two advanced applications - which require irregular data and work distributions - in Vienna Fortran and identify the reasons why the current version of HPF does not provide adequate functionality for formulating efficient parallel versions of these codes. © 1994, Springer Verlag. All rights reserved.

关键词： FORTRAN (programming language)

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Formalizing openMP performance properties with ASL 3rd

Formalizing openMP performance properties with ASL

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3rd International Symposium on High Performance Computing, ISHPC 2000

作者： Fahringer, Thomas Gerndt, Michael Riley, Graham Träff, Jesper Larsson Institute for Software Technology and Parallel Systems University of Vienna Austria Institute for Computer Science LRR Technical University of Munich Germany Department of Computer Science University of Manchester United Kingdom C and C Research Laboratories NEC Europe Ltd United Kingdom

ISBN: (纸本)9783540411284

Performance analysis is an important step in tuning performance critical applications. It is a cyclic process of measuring and analyzing performance data which is driven by the programmer's hypotheses on potential performance problems. Currently this process is controlled manually by the programmer. We believe that the implicit knowledge applied in this cyclic process should be formalized in order to provide automatic performance analysis for a wider class of programming paradigms and target architectures. This article describes the performance property specification language (ASL) developed in the APART Esprit IV working group which allows specifying performance-related data by an object-oriented model and performance properties by functions and constraints defined over performance-related data. Performance problems and bottlenecks can then be identified based on user-or tool-defined thresholds. In order to demonstrate the usefulness of ASL we apply it to OpenMP by successfully formalizing several OpenMP performance properties. © Springer-Verlag Berlin Heidelberg 2000.

关键词： Knowledge representation

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Multiple data parallelism with HPF and KeLP

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International Conference and Exhibition on High-Performance Computing and Networking, HPCN 1998

作者： Merlin, John H. Baden, Scott B. Fink, Stephen J. Chapman, Barbara M. VCPC Institute for Software Technology and Parallel Systems University of Vienna Liechtensteinstr. 22 ViennaA-1090 Austria Department of Computer Science and Engineering University of California San Diego La JollaCA92093-0114 United States

ISBN: (纸本)3540644431

High Performance Fortran (HPF) is an effective language for implementing regular data parallel applications on distributed memory architectures, but it is not well suited to irregular, block-structured applications such as multiblock and adaptive mesh methods. A solution to this problem is to use a non-HPF SPMD program to coordinate multiple concurrent HPF tasks, each operating on a regular subgrid of an irregular data domain. To this end we have developed an interface between the C++ class library KELP, which supports irregular, dynamic block-structured applications on distributed systems, and an HPF compiler, SHPF. This allows KeLP to handle the data layout and inter-block communications, and to invoke HPF concurrently on each block. There are a number of advantages to this approach: it combines the strengths of both KeLP and HPF;it is relatively easy to implement;and it involves no extensions to HPF or HPF compilers. This paper describes the KeLP-HPF implementation and programming model, and shows an example KeLP-HPF multiblock solver. © Springer-Verlag Berlin Heidelberg 1998.

关键词： Memory architecture

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An automated algorithmic recognition technique to support parallel software development

An automated algorithmic recognition technique to support pa...

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IEEE International Workshop on software Engineering for parallel and Distributed systems

作者： B. Di Martino G. Iannello H.P. Zima Dipartimento di Informatica e Sistemistica University of Napoli Federico II Italy Institute of Software Technology and Parallel Systems University of Technology Vienna Austria Technology and Parallel Systems University of Technology Vienna Austria

Techniques for automatic program recognition, at the algorithmic level, could be of great interest in the area of program parallelization, because the selection of suitable parallelization strategies is driven by algorithmic features of the code. A technique for the specification and automatic recognition of algorithmic concepts is presented. Its flexibility and expressivity power for specifying the hierarchy, the constraints and the relationships among concepts allow it to deal with recognition of algorithmic concepts within optimized code, irregular computations, and in the presence of code sharing, delocalization, implementation variations and other problems related to program recognition in the context of the imperative languages typically used for scientific computation.

关键词： software algorithms Programming Libraries Constraint optimization Humans Concrete Data structures Target recognition Runtime Character recognition

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parallelization of a Monte-Carlo ion implantation simulator for three-dimensional crystalline structures

Parallelization of a Monte-Carlo ion implantation simulator ...

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International Conference on Simulation of Semiconductor Processes and Devices (SISPAD)

作者： A. Hossinger M. Radi B. Scholz T. Fahringer E. Langer S. Selberherr Institute for Microelectronics Technische Universitat Vienna Vienna Austria Institute for Software Technology and Parallel Systems University of Technology Vienna Vienna Austria

The simulation of ion implantation using a Monte-Carlo method is one of the most time consuming tasks in process simulation, which makes it a first-order target for parallelization. We present a parallelization strategy for the Monte-Carlo ion implantation simulator MCIMPL based on the message passing interface (MPI), with an almost linear performance gain.

关键词： Ion implantation Crystallization Workstations Performance gain Master-slave Microelectronics Message passing Production Semiconductor devices Rapid thermal processing

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Processing irregular codes containing arrays with multi-dimensional distributions by the PREPARE HPF compiler

Processing irregular codes containing arrays with multi-dime...

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International Conference and Exhibition on High-Performance Computing and Networking, HPCN Europe 1995

作者： Brezany, Peter Chéron, Olivier Sanjari, Kamran van Konijnenburg, Erik Institute for Software Technology and Parallel Systems University of Vienna Brünnerstrasse 72 ViennaA-1210 Austria IRISA Campus Universitaire de Beaulieu Rennes Cedex35042 France ACE Van Eeghenstraat 100 GL Amsterdam1071 Netherlands

ISBN: (纸本)9783540593935

The automatic parallelization of irregular codes for massively parallel systems is a challenging problem of growing importance. This paper describes techniques for processing irregular codes that are being implemented in the Prepare HPF compiler. Our work makes two contributions: (1) it constructs a library called Parti+ that is used for the runtime analysis of codes with runtime data dependent accesses to arrays with multi-dimensional distributions, and (2) it develops the appropriate compiler support allowing optimizations. © Springer-Verlag Berlin Heidelberg 1995.

关键词： Codes (symbols)

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Evaluation of P/sup 3/T+: a performance estimator for distributed and parallel applications

Evaluation of P/sup 3/T+: a performance estimator for distri...

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International Symposium on parallel and Distributed Processing (IPDPS)

作者： T. Fahringer A. Pozgaj J. Luitz H. Moritsch Institute for Software Technology and Parallel Systems University of Technology Vienna Vienna Austria Institute of Physical and Theoretical Chemistry University of Technology Vienna Vienna Austria

In this paper, we report on experiences with P/sup 3/T+, a performance estimator for distributed and parallel programs which is used to examine at compile time the performance outcome of changes in code, problem and machine sizes, and target architectures. P/sup 3/T+ computes a variety of performance parameters including work distribution, number of transfers, amount of data transferred, transfer times, computation times, and number of cache misses. It is unique in that it models programs, code transformations and parallel and distributed architectures and derives a performance prediction based on all three of these elements. P/sup 3/T+ is the successor tool of P/sup 3/T which computed a similar set of performance parameters, however for parallel programs only. P/sup 3/T+ has been re-designed and re-implemented from scratch and goes beyond P/sup 3/T by extending the class of programs that cart be handled and by employing several novel estimation methods (symbolic analysis, simulation, pre-measured kernel codes, etc.). The core part of this paper reports on the evaluation of P/sup 3/T+ to demonstrate both accuracy and usefulness of this tool for realistic kernel codes taken from real-world applications (pricing of financial derivatives and quantum mechanical calculations of solids).

关键词： Computer architecture Read only memory Kernel Programming profession Concurrent computing Data flow computing Cost accounting Pricing Solids Electrical capacitance tomography

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Dynamic data distributions in Vienna Fortran

Dynamic data distributions in Vienna Fortran

引用

Supercomputing Conference

作者： B. Chapman P. Mehrotra H. Moritsch H. Zima Institute of Software Technology and Parallel Systems University of Technology Vienna Vienna Austria NASA Langley Research Center LCASE Hampton VA USA

Vienna Fortran is a machine-independent language extension of Fortran which is based on the single-program-multiple-data (SPMD) paradigm and allows the user to write programs for distributed-memory systems using global addresses. The language features focus mainly on the issue of distributing data across virtual processor structures. The authors discuss those features of Vienna Fortran that allow the data distributions of arrays to change dynamically, depending on runtime conditions. They discuss the relevant language features, outline their implementation, and describe how they may be used in applications.

关键词： NASA Runtime Electronic mail Distributed computing Space technology Application software High level languages Programming profession Contracts Computer aided software engineering

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